Cosmic Cube = Howard Stark's Element ????

Agent Fury said that Howard Stark discovered an energy source that would start an energy race.
Tony Stark is in The First Avenger.
The Cosmic Cube is in The Fist Avenger.
The Hydra Soldiers have weapons with Blue Energy in them.
The Mjilner Hammer has blue energy
The chest piece in Iron Man's new armor is blue...